In the next 24 hours, the temperature will gradually rise in Purulia, Bankura, East and West Burdwan and Birbhum districts. The sky in South Bengal is perfectly clear. Meteorologists estimate that daytime temperatures could rise by 4 to 5 degrees over the weekend. In Kolkata, mercury can touch 36 to 38 degrees Celsius. Temperatures in western districts like Bankura, Purulia, West Burdwan and Birbhum will reach 40 degrees Celsius.